Research Network for Metals in Medicine

 

 

Professor Elmar Krausz

Position: Professor, Chemistry

Affiliation: Australian National University, Research School of Chemistry

Postal Address:
Research School of Chemistry Building 31 Science Road
Australian National Univeristy
ACT 0200
AUSTRALIA

Phone: +61 (02) 6125 3577
Email: krausz@rsc.anu.edu.au
Webpage: http://rsc.anu.edu.au/~krausz/laser.html


Research Profile

The area of my interests has been, broadly, inorganic materials in the solid state as studied by optical and magnetic resonance spectroscopies. I have been involved in the development and deployment of a number of new spectroscopic techniques in chemical spectroscopy. The application of new techniques and enhancements of established spectroscopies has led to an improved understanding of the electronic structure and photophysical processes in systems of current chemical interest. In some cases, the results have been quite revolutionary with paradigms in the literature being gradually overturned. I have taken a strong interest in theory throughout my career and have been involved in a number of quite significant and long lived theoretical developments.

Ligand Field Theory & Vibronic Processes: development of "spectroscopic" models of inorganic complexes; detailed analyses of Hertzberg-Teller & Jahn-Teller processes; applications of magnetic circular dichroism and related techniques to inorganic complexes in crystals and solid solutions;

Magnetism: exchange coupling in metal dimers; magneto-optical properties of linear chain ferromagnets; magnetic circular dichrosim study of XeF radicals;

Mixed Valence: Piepho-Krausz-Schatz (PKS) theory of mixed valence; spectroscopic studies of strongly and weakly coupled mixed valence dimers; strong coupling model of osmium di-nitrogen dimer; trigonal symmetry mixed valence dimers;

Charge Transfer: "multi-technique" spectroscopic studies on prototypal metal to ligand charge transfer complexes; identification of the role of microheterogeneity in inorganic complexes; theory of electrochromism for degenerate states; ultra-high spectral resolution in a complex; direct observation of internal electron transfer processes; intramolecular "mini-exciton" features in osmium complexes;

Techniques: magnetic circular dichroism and related techniques as general tools in chemical spectroscopy; the C term saturation technique in magnetic circular dichroism, theory and practice; the matrix injection technique, transfer of vacuum deposited argon isolation films into liquid helium without warming; detector optimisation and enhancement in optical spectroscopy; magnetic circular dichroism of vibrational transitions; utilization of computer interface techniques to enhance spectrometer and laser performance; laser stabilization with controlled mode hopping as a method in high resolution spectroscopy; line narrowing and spectral hole burning applied to chemistry;

Instrumentation: development of the first GHz NQR spectrometer; design and development of pulsed Zeeman apparatus; cryogenic flow tube and cryostat development; highest performance magnetic circular dichroism spectrometer; operational from the ultraviolet to infra-red; design of high performance micro-crystal, low temperature, single crystal, Raman and polarized absorption spectrometers;



Selected Publications

  1. Electric-field-induced Broadening of Spectral Holes in Zinc Phthalocyanine; R. Purchase, M. J. Sellars, E. Krausz and N.B. Manson , Chem. Phys. Lett, 37,189-196 (2000).
  2. Magneto-optic Measurements of Spectral Holes in Metallo-Porphyrin Derivatives in Polymer Matrices , R. Purchase, M. J. Sellars, E. Krausz and N.B. Manson, PCCP 18, 3993-4000 (2000).
  3. The Crystal Structure and Second Order Nonlinear Optical Susceptibility of the Addition Complex, AsI3.3S8; J.F. Kelly, E. Krausz, A.C. Willis, A. Samoc and M. Samoc. Aust. J. Chem. in preparation (2000).
  4. Probing the Electronic Structure of Coordination Compounds by Transient Spectral Hole-Burning. Applications to Specifically Deuterated [Ru(bpy)3]2+ Complexes; H. Riesen, L. Wallace and E. Krausz Inorg. Chem, 39, 5044-5022 (2000).
  5. B.M. Flanagan, P. V. Bernhardt, E. R. Krausz, S.R. Lüthi and M.J. Riley "Ligand-field analysis of an Er(III) complex with a heptadentate tripodal N4O3 ligand. Inorg. Chem. 40, 5401-5407 (2001)
  6. V.M. Masters, P. Smith, E. Krausz and R. Pace "Stark Shifts and Exciton coupling in PSII 'Supercores'" J. Luminescence 94, 267-270 (2001)
  7. P. J. Smith, S., Peterson, V.M. Masters, T. Wydrzynski, S. Styring, E. Krausz and R.J. Pace "Magneto-Optical Measurements of the Pigments in Fully Active Photsystem II Core Complexes from Plants" Biochemistry 41, 1981-1989 (2002)
  8. J.F. Kelly, E. Krausz, A.C. Willis, A. Samoc and M. Samoc "The Crystal Structure and Second Order Nonlinear Optical Susceptibility of the Addition Complex, AsI3.3S8" Aust. J. Chem. 55, 709-714(2002).
  9. P.J. Smith, E. Krausz, V.M. Masters, T. Wydrzynski, S, Peterson, S Styring, and R. J. Pace "Low temperature optical - MCD and EPR studies on a fully active plant PS II complex containing 32 Chl per reaction centre." PS2001 Proceedings12th International Congress on Photosynthesis (2001)
  10. T.Mc.C.Lilley, X-Q Wang,, E. Krausz and T.J. Andrews "Spectroscopic studies of chemiluminescence by Mn++-activated rubisco: Singlet oxygen is entirely absent and the emission spectrum differs between forms of rubisco." PS2001 Proceedings12th International Congress on Photosynthesis (2001)
  11. P.J. Smith, S, Peterson E. Krausz, T. Wydrzynski and R. J. Pace "ESR studies on Photosystem II samples and Core Complexes from Higher Plants. Implications from studies on the g4.1 signal." PS2001 Proceedings12th International Congress on Photosynthesis (2001)
  12. R.Mc.C. Lilley, X-Q. Wang, E. Krausz and T.J. Andrews "Complete Spectra of the Far-red Chemiluminscence of theOxygenase Reaction of Mn++ activated Ribulose-biphosphste Carboxylase/Oxygenase Establish Mn2+ as the Source." J. Biological. Chem. 278,16488-16493 (2003)
  13. S. Peterson, V.M. Masters, B. Prince, P.J. Smith R.J. Pace and E. Kraus "Optical Spectra of Synechocystis andSpinach Photosystem II Preparations: Identification of the D1-Pheophytin Energies and Stark Shifts. J. Amer. Chem. Soc. In press (2003).
  14. S. Peterson, E. Krausz , P. Smith R. Pace, R. Picorel and M. Seibert " Low-Temperature Spectroscopy of Fully Active PSII Cores. Comparisons with CP43, CP47, D1/D2/cyt b559. " J. Lumin. In press 2003.
  15. J. Hughes, B. Prince, S. Peterson, E. Krausz , R. Pace, R. Picorel and M. Seibert "Photo-Conversion of Chlorophylls in Higher-Plant CP43 Characterized by Persistent Spectral Hole-Burning at 1.7 K " J. Lumin. In press 2003.
  16. B. Prince, E. Krausz , S. Peterson, P. Smith and R. Pace "Persistent Spectral Hole Burning in Oxygen Evolving Photosystem II Cores from Cyanobacteria and Higher Plants. " J. Lumin. In press 2003.
  17. E. Krausz "Photosynthesis, Chasing the P680 Dragon" Chemistry in Australia, 69:9 24-26 (2002).
  18. E. Krausz "Biophysics and Biochemistry of Photosystem II "The Physicist, 40, 7-11 (2003).
  19. M.J. Riley, E.R.Krausz, A. Stanco, "New Generation MCD Spectrometers" Journal of Inorganic Biochemistry, 96, 217 (2003)